i use an avr micro controler it costs 12. two small reed relays. about 5. an automotive relay another 5. the rfid reader ~ 50 and the door pop solenoid (30 on ebay). so the basics are around 100. im also replacing my door handle with a piece of plexi that the rfid reader can bee seen thru. kinda like a shaven door but different.. if u want to se emroe of this kinda stuff check out http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl and www.letsmakerobots.com its fun stuff to play with

<a href="www.pittsfieldcustomsclub.com/sportage.html" target="_blank">98 sportage</a>: warn manual hubs,upyourkia spacers, 104 tj springs, 235/75/r15 BFG T/A KO, tracker rims, cone air filter, custom cat-back with a skunk2 muffler. gonna be a 2.3L